blob: 23ee4c304400c68000716dd9f8aa2df6d657b60e [file] [log] [blame]
/*
* Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
* Copyright (C) 2005 Eric Seidel <eric@webkit.org>
* Copyright (C) 2013 Google Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef SKY_ENGINE_PLATFORM_GRAPHICS_FILTERS_FECOLORMATRIX_H_
#define SKY_ENGINE_PLATFORM_GRAPHICS_FILTERS_FECOLORMATRIX_H_
#include "sky/engine/platform/graphics/filters/Filter.h"
#include "sky/engine/platform/graphics/filters/FilterEffect.h"
#include "sky/engine/wtf/Vector.h"
namespace blink {
enum ColorMatrixType {
FECOLORMATRIX_TYPE_UNKNOWN = 0,
FECOLORMATRIX_TYPE_MATRIX = 1,
FECOLORMATRIX_TYPE_SATURATE = 2,
FECOLORMATRIX_TYPE_HUEROTATE = 3,
FECOLORMATRIX_TYPE_LUMINANCETOALPHA = 4
};
class PLATFORM_EXPORT FEColorMatrix : public FilterEffect {
public:
static PassRefPtr<FEColorMatrix> create(Filter*, ColorMatrixType, const Vector<float>&);
ColorMatrixType type() const;
bool setType(ColorMatrixType);
const Vector<float>& values() const;
bool setValues(const Vector<float>&);
virtual PassRefPtr<SkImageFilter> createImageFilter(SkiaImageFilterBuilder*) override;
virtual TextStream& externalRepresentation(TextStream&, int indention) const override;
static inline void calculateSaturateComponents(float* components, float value);
static inline void calculateHueRotateComponents(float* components, float value);
private:
FEColorMatrix(Filter*, ColorMatrixType, const Vector<float>&);
virtual void applySoftware() override;
virtual bool affectsTransparentPixels() override;
ColorMatrixType m_type;
Vector<float> m_values;
};
} // namespace blink
#endif // SKY_ENGINE_PLATFORM_GRAPHICS_FILTERS_FECOLORMATRIX_H_